JP2010271855A - Drawing apparatus, drawing method, program, and recording medium - Google Patents

Abstract

A drawing person is supported to recognize new drawing information by another drawing person.
When input to a drawing input screen 3 is performed by an input device 4, drawing information is displayed on the screen, and the coordinates of the drawing information are converted into two-dimensional coordinates on a virtual drawing space and stored. For each drawing on the drawing space by each participant, the drawing information extraction unit 13 calculates the position and size of the drawing information block currently being drawn when the writing amount of each participant is greater than or equal to a certain amount. To do. The extracted drawing information display control unit 14 displays on the extracted drawing information display screen 5 a link image indicating a block or region of newly extracted drawing information. Further, when this link image is selected, the extracted drawing information display control unit 14 opens the drawing input screen, cuts the drawing information of the corresponding drawing area of the extracted drawing information display screen 5 from the drawing space described above, and The coordinates of the clipped area are converted into coordinates for the drawing input screen and drawn on the drawing input screen.
[Selection] Figure 1

Description

  The present invention relates to, for example, a drawing apparatus, a drawing method, a program, and a recording medium having a support function for writing out one's thoughts and ideas that a user is thinking.

In the process of thinking in idea creation, the act of writing out ideas that are being considered or discussed by the creator of the idea has an important role in organizing the ideas and promoting thoughts and discussions.
In addition, when creating ideas with multiple people, participants can write out ideas and check related ideas of others who also create ideas and their own ideas so far. In some cases, a viewpoint different from the viewpoint of thinking is discovered or a stimulus for thinking is received, which is an effective means for generating new ideas in idea creation.

However, it is difficult for a participant to confirm the writing of others while drawing for idea creation. In addition, when the participant concentrates on his / her own thinking and draws, there is a problem that the latest drawing information drawn by others is difficult to notice.
Conventional tools used to create ideas include paper and whiteboard, but no matter which tool is used, when one participant draws, the other person's body being drawn becomes an obstacle. It is difficult to make both drawing and confirming the ideas of others compatible.

  On the other hand, for example, a shared whiteboard system as disclosed in Patent Document 1 is used as a method of solving the problem that there is only one place to physically write and that all participants participating in the discussion write out. is there. In this system, the work on the whiteboard is reproduced at a meeting or a distance lesson by using a client or server that saves a snapshot and history of what was written on the whiteboard as a file.

JP 2007-66315 A

  The shared whiteboard system as described above can draw on a virtual drawing surface by using individual input / output devices for each participant, and can share drawing information among participants. In other words, since the physical space is not shared among the participants, the participant's body does not get in the way when the other person's drawing content is confirmed.

  However, even if such a system is used, the problem that it is difficult for the participant to notice the presence of the latest drawing information drawn by others cannot be solved. For example, if a participant is drawing in one drawing area and wants to check the writing of others in another drawing area, both the drawing area and the entire drawing area written by the other party However, if the size of the entire drawing area is set so as to be within the field of view of the participant, the space in which the participant can draw becomes narrow, and a lot of writing cannot be performed.

In addition, if the entire drawable area is widened so that many ideas can be written on the screen, participants can put both the drawing area for writing their own ideas and the entire drawing area for others to write in view. Becomes difficult and difficult to see.
Therefore, an object of the present invention is to provide a drawing apparatus, a drawing method, a program, and a recording medium that can support a drawing person to recognize new drawing information by another drawing person.

  In order to achieve the above object, a drawing apparatus according to the present invention stores an input unit that receives an input operation of drawing information, and stores the drawing information input by the input unit together with information on a drawing target area on the drawing screen of the drawing information. Drawing information storage means, display means for drawing drawing information input by the input means and drawing information stored in the drawing information storage means, drawing information input by the input means, and Display control means for displaying the drawing information stored in the drawing information storage means on the drawing screen based on the drawing target area information of the drawing information on the drawing screen; and the drawing information input by the input means Drawing information extracting means for extracting drawing information forming a predetermined unit according to the drawing state of the drawing information stored in the storage means , Characterized by comprising an extraction information display control means for displaying the drawing information extracted from the drawing information extraction means in distinction from drawing information displayed in the drawing window.

In the drawing apparatus having the above-described configuration, the extracted information table control display means is selected when the displayed drawing information is selected when the drawing information extracted by the drawing information extracting means is displayed. The information is displayed on the drawing screen.
In the drawing apparatus having the above-described configuration, the extraction information display control unit displays the drawing information extracted by the drawing information extraction unit in a blank area on the drawing screen or an area where display information does not change for a certain period of time. Features.

  The drawing apparatus having the above configuration further includes a calculation unit that calculates a difference between the drawing information newly extracted by the drawing information extraction unit and the drawing information extracted and displayed in the past by the drawing information extraction unit. The extracted drawing information display means deletes drawing information satisfying a predetermined standard that can be regarded as information having the same degree of difference from the drawing screen.

  ADVANTAGE OF THE INVENTION According to this invention, it can assist that a drawing person recognizes the new drawing information by another drawing person.

1 is a diagram illustrating a basic configuration example of a drawing system according to an embodiment of the present invention. 1 is a block diagram illustrating a configuration example of a drawing processing device of a drawing system according to an embodiment of the present invention. The figure which shows the relationship between the drawing space of a virtual two-dimensional plane in the drawing system in embodiment of this invention, and a drawing input screen. The figure which shows an example of the network structure of the drawing system in embodiment of this invention. The figure which shows the structural example in the case of having all the drawing information display screens in the drawing system in embodiment of this invention. The block diagram which shows the 2nd structural example of the drawing processing apparatus of the drawing system in embodiment of this invention. The figure which shows an example of the display form which overlap | superposed the drawing input screen displayed with the drawing system in embodiment of this invention, and the all drawing information display screen. The figure which shows the example of extraction of the drawing information by the drawing processing apparatus of the drawing system in embodiment of this invention. The figure which shows the 1st example of the extraction drawing information display screen by the drawing processing apparatus of the drawing system in embodiment of this invention. The figure which shows the 2nd example of the extraction drawing information display screen by the drawing processing apparatus of the drawing system in embodiment of this invention. The figure which shows the example of drawing information selection in the extraction drawing information display screen by the drawing processing apparatus of the drawing system in embodiment of this invention. The figure which shows the example of a display of the selection image in the extraction drawing information display screen by the drawing processing apparatus of the drawing system in embodiment of this invention. The flowchart which shows an example of the processing operation by the drawing system in embodiment of this invention. The figure which shows another example of a display of the extraction drawing information by the drawing processing apparatus of the drawing system in embodiment of this invention. The block diagram which shows the 3rd structural example of the drawing processing apparatus of the drawing system in embodiment of this invention. The flowchart which shows the modification of the processing operation by the drawing system in embodiment of this invention.

  The system according to the present invention holds a virtual two-dimensional plane drawing space for the purpose of writing ideas and discussions among a plurality of people, and viewing drawing information by extracting a part of the drawing space. This is a collaborative drawing system that has a personal drawing input screen that can perform drawing, and a drawing information display screen that displays all drawing information in a panoramic view. This is a cooperative drawing system having a function of extracting drawing information to be confirmed by others as a lump of drawing and automatically displaying it as a link image. However, the drawing block to be extracted is displayed for a certain period of time, and is the drawing block being drawn at a certain time in the present or the past.

The main point of the feature of the present invention is that for the drawing information added sequentially, the drawing information block currently being drawn, for example, the position and size is extracted according to the drawing input state, for example, the writing amount, and the presence / absence of display is determined. A function to calculate and display is provided.
In addition, the drawing system according to the present invention has a function of moving an area displayed on the drawing input screen to an area corresponding to the link image when the link image displayed as described above is clicked with a mouse.

The drawing system according to the present invention defines the extraction timing for extracting a block of meaningful drawing information that is currently being drawn at a certain point in the past or how to select the block, and a method for saving the block. Means for performing display and link functions.
Furthermore, the drawing system also has a function of displaying the latest extracted drawing contents according to the drawing state on the side where the drawing contents are presented.
As a result, it is easy to notice the content that is currently being drawn by others, that is, the existence of a region to be confirmed even during drawing, and an image can be easily displayed.

  In this virtual two-dimensional plane drawing space, drawing information written in the past on the drawing input screen and drawing information input from another drawing input screen are stored. The drawing system according to the present invention extracts information currently being drawn, and automatically displays the extracted information on the extracted drawing information display screen 5 as a link icon.

Embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)
First, a first embodiment of the present invention will be described.
FIG. 1 is a diagram illustrating a basic configuration example of a drawing system according to an embodiment of the present invention.
This drawing system is a system having a drawing processing device 1, a drawing display device 2, and an input device 4, and it is easy to start writing when a participant performs handwriting writing such as writing his / her thoughts and ideas during thinking. And a system having a function of making it easy to continue writing.

The input device 4 is a device for a participant to input drawing information by handwriting.
The drawing display device 2 is a device connected to the drawing processing device 1, and is a device for displaying the drawing information input by the input device 4 on the drawing input screen 3 through processing by the drawing processing device 1.

  Examples of the input device 4 for handwriting input include a pen tablet and a mouse input. Moreover, the method of pen-inputting with the tablet with a screen and tablet PC with which the tablet and the screen were united is mentioned. Another example is a method of inputting drawing information by touching with a finger such as a touch screen.

The drawing input screen 3 may be a window screen displayed on a display or the like, or may be a window in the above-described tablet PC screen.
In the example illustrated in FIG. 1, the drawing display device 2 is the above-described tablet with a screen, and the input device 4 is a pen for performing input to the tablet with a screen. In this case, the drawing information can be input by directly contacting the pen as the input device 4 inside the window of the drawing input screen 3 displayed on the screen of the tablet, and the pen on the drawing input screen 3 is touched. Drawing information such as lines and dots is displayed at the positions.

  Therefore, the part for detecting the position of the pen, which is a part of the input device 4, and the window display part on the drawing input screen 3 are physically the same. In this case, the drawing information input by handwriting input is a collection of two-dimensional coordinate groups that become a trajectory until the pen is released after being brought into contact with the tablet. In this way, the trajectory from when the pen is touched to when it is released is displayed as a single line or point, and information obtained by collecting these lines and points is the drawing information.

  In this drawing system, a line is also defined as a point. When a line is input by the input device 4, the line is decomposed into points to be a start point, an end point, and an intermediate point between them. The storage device 12 may store information indicating which point is connected to which point or which point is not connected to any point.

Note that when the input device 4 is the mouse described above, the drawing information is a collection of two-dimensional coordinate groups consisting of the locus of the cursor from the click-down of the mouse to the click-up.
The drawing information has attributes such as line thickness and color. The thickness and color are determined in advance, or by selecting an item of arbitrary thickness and color with a pen or mouse on a menu screen (not shown) temporarily displayed on the drawing input screen 3. There is a case. Or, to eliminate menu selection operations other than drawing, limit the line thickness and number of colors that can be set, use pen buttons and mouse buttons, and press them to select the type of button pressed In some cases, the line thickness or color assigned in advance is determined according to the number of times. Specifically, the color is changed by pressing a button on the pen, such as black → red → blue → eraser → black (return).

FIG. 2 is a block diagram illustrating a configuration example of the drawing processing apparatus of the drawing system according to the first embodiment of the present invention.
As shown in FIG. 2, the drawing processing apparatus 1 of the drawing system according to the first embodiment of the present invention includes a control unit 11, a storage device 12, a drawing information extraction unit 13, an extracted drawing information display control unit 14, and display control. Each of which is connected to each other via a bus 16.

The storage device 12 includes a drawing information storage unit 17 for storing the drawing information input by the input device 4 together with the information on the drawing target area on the drawing screen of the drawing information.
The drawing information extraction unit 13 applies a lump or region of drawing information drawn at a current or past time to all drawing information on a virtual two-dimensional plane drawing space according to a drawing input state. Extract.
The extracted drawing information display control unit 14 displays an image indicating the drawing information extracted by the drawing information extraction unit 13 on the extracted drawing information display screen 5 in the drawing display device 2.

The display control unit 15 displays the input drawing information and the drawing information stored in the drawing information storage unit 17 on the drawing input screen 3 that is a drawing screen based on the drawing target area information on the drawing information drawing screen. .
The drawing information input on the drawing input screen 3 is always held in the storage device 12 as coordinates in a two-dimensional coordinate space on the virtual drawing space that is a virtual drawing space. In the present embodiment, drawing information of a cutout area obtained by cutting out a partial area of the two-dimensional coordinate plane on the virtual drawing space is displayed in the window of the drawing input screen 3.

Therefore, when the drawing input screen 3 is opened, the storage device 12 holds data for associating the coordinates of the cutout region on the two-dimensional coordinate plane in the virtual drawing space with the coordinates of the drawing input screen 3.
Specifically, for example, the upper left coordinate value of the cutout area is stored as data for taking the above correspondence so that the upper left coordinate value of the cutout area becomes the upper left coordinate value on the drawing input screen 3. 12 to hold.

When drawing information is input from the drawing input screen 3, a coordinate value obtained by adding the upper left coordinate value of the cutout area to the coordinate value on the drawing input screen 3 is stored in the drawing information storage unit 17.
On the contrary, when the stored drawing information is redrawn on the drawing input screen 3, the drawing is redrawn based on the two-dimensional coordinate value obtained by subtracting the upper left coordinate value of the cutout area from the stored coordinate value. Is made.

  Note that the coordinate magnifications of the virtual drawing space and the drawing input screen may be set to be the same or different. For example, when the virtual drawing space is set to double the drawing space of the drawing input screen 3, the drawing information input from the drawing input screen 3 doubles the coordinate value on the drawing input screen. The coordinate values thus stored are stored in the drawing information storage unit 17 as two-dimensional coordinate values on the virtual drawing space. When the stored drawing information is redrawn on the drawing input screen 3 in accordance with scrolling or the like, the drawing is drawn on the screen based on a coordinate value obtained by halving the stored coordinate value.

FIG. 3 is a diagram showing a relationship between a virtual two-dimensional plane drawing space and a drawing input screen in the drawing system according to the embodiment of the present invention.
Therefore, the drawing information data input by the input device 4 composed of two-dimensional coordinates on all virtual drawing spaces is held in the drawing information storage unit 17, and the drawing input screen is as shown in FIG. This is a window in which drawing information obtained by cutting out a part of the drawing information on the virtual drawing space is displayed.

  It should be noted that when the drawing input screen 3 is opened, the area to be cut out from the virtual two-dimensional plane drawing space may be set in advance according to the user, or the virtual two-dimensional plane drawing space. A space with a relatively large margin may be selected at random. In addition, after the drawing input screen 3 is opened, the area corresponding to this screen can be moved to a nearby area by, for example, scrolling with the button or pen as the input device 4.

  The drawing input screen 3 can be used by one person, and the drawing information input on this screen can be stored in a virtual two-dimensional plane drawing space. By connecting drawing systems via a network and writing drawing information from other systems by transmitting and receiving drawing information between the drawing systems, cooperative drawing is possible.

FIG. 4 is a diagram illustrating an example of a network configuration of the drawing system according to the embodiment of the present invention.
In the example shown in FIG. 4, the drawing processing apparatus 1 used by each of a plurality of participants is positioned as a client, and these are connected to the server 30 via a network.
When each client receives drawing information from another client, the drawing information is stored in the drawing information storage unit 17 together with information on the drawing target area on the drawing screen of the drawing information. It is reflected in the drawing information drawn by.

  The server 30 receives drawing information from each client and transfers it to other clients. The server 30 transfers drawing information and has an entire drawing information display screen for drawing this information, and projects it on the display or the previous screen. In the example shown in FIG. 4, the server 30 projects the entire drawing information display screen onto the screen 32 by the projection device 31.

  Also, the server-side display screen may be displayed in a reduced size as the writing range is widened, like the all drawing information screen of the client. Accordingly, similarly to the client, the server 30 stores the drawing information sent from all the clients as two-dimensional coordinates on the virtual drawing space in the storage device, and uses the stored drawing information at the time of redrawing.

  Further, the client adds the drawing information of the other clients transferred from the server 30 to the entire drawing information screen or the drawing input screen, draws it, and stores it in the drawing information storage unit 17. The client may store the drawing information in the order of the drawing information sent from the server 30 so that the order of the drawing information held by all the clients is the same.

  That is, when the client is not connected to the server 30, the drawing information is stored in the order input from the drawing input screen. When the client is connected to the server 30, the drawing input from the drawing input screen is stored. Information is once sent to the server 30 and stored in the order in which the information was transferred from the server 30.

However, even when connected to the server 30, at the time of input, drawing is performed on the drawing input screen or the entire drawing information input screen in the input order, and when the drawing information is transferred from the server 30, the transfer is performed. There is also a method of redrawing the drawing information in order. Thereby, it is possible to maintain smooth writing ease by drawing without delay at the time of input. Alternatively, a method may be used in which time stamps are attached to the drawing information for each client and the drawing information is determined to be drawn in this order.
By arranging the drawing order in this way, the same drawing screen is obtained even if an event occurs in which the drawn object is erased later by the eraser.
As described above, if each client has a physically different drawing area, drawing by a plurality of people is possible, and writing and writing habits can be eliminated at the same time.

Further, on the entire drawing information display screen and drawing input screen projected by the server 30, the position of the drawing input screen opened by another client, that is, a frame indicating the drawing area, the position of the other person's pen or mouse, That is, mouse cursor information may be displayed.
In addition to drawing information, it is possible to instruct what is drawn by sending the position of the pen and to convey it to others. Furthermore, drawing information that has been sent between clients so far can be stored in the server 30, and when a participant joins in the middle, such information can be sent to make the participation possible.
In this example, the server 30 is provided. However, the server 30 may be provided only with the client, and each client may send drawing information.

FIG. 5 is a diagram illustrating a configuration example in the case where the drawing system according to the embodiment of the present invention has an entire drawing information display screen.
Furthermore, as shown in FIG. 5, the drawing system according to the present embodiment has a total drawing information display screen 6 for displaying all drawing information composed of two-dimensional coordinates on a drawing space of a virtual two-dimensional plane. It is also possible to select the area in the entire drawing information display screen 6 by the input device 4 so that the area is enlarged for drawing and displayed on the drawing input screen 3.

  Note that the entire drawing information display screen 6 is not limited to an area in which all drawing information composed of two-dimensional coordinates on a drawing space of a virtual two-dimensional plane exists, Since nothing is written in the drawing space of a typical two-dimensional plane, an area of a preset size on the drawing space of the virtual two-dimensional plane is displayed.

FIG. 6 is a block diagram illustrating a second configuration example of the drawing processing apparatus of the drawing system according to the embodiment of the present invention.
In the example illustrated in FIG. 6, the drawing processing apparatus 1 further includes a full screen information display processing unit 21 as compared with the example illustrated in FIG. 2.
As an implementation method, the full-screen information display processing unit 21 sets the size of this virtual drawing space in advance for drawing information that is two-dimensional coordinates on the virtual drawing space stored in the drawing information storage unit 17. The magnification for converting the drawing information is calculated from the size of the virtual drawing space and the size of the entire drawing information display screen 6.

The full screen information display processing unit 21 calculates the coordinate value of the drawing information to be drawn on the full drawing information display screen 6 from the magnification of the size of the full drawing information display screen 6 with respect to the virtual drawing space, and follows this coordinate value. Drawing information is displayed on the entire drawing information display screen 6.
In addition, the entire drawing information display screen for the size of the drawing space of the virtual two-dimensional plane having a preset size and the size of the range including all the drawing information of the drawing space of the virtual two-dimensional plane. If 6 is narrow, the entire drawing information display screen 6 is displayed at a constant reduction rate with respect to the virtual two-dimensional plane drawing space.

Basically, the size of the preset virtual two-dimensional plane drawing space at the start of the drawing system is larger than the virtual two-dimensional plane drawing space to be displayed on the drawing input screen 3. The drawing information displayed on the entire drawing information display screen 6 is reduced as compared with the drawing information displayed on the drawing input screen 3.
Accordingly, when an area in the entire drawing information display screen 6 is selected by the input device 4, it appears that the area is enlarged and displayed on the drawing input screen 3. Further, the information input from the drawing input screen 3 is reduced and drawn on the entire drawing information display screen 6 at a magnification opposite to the enlargement magnification. Therefore, the participant can write drawing information greatly by using the enlarged drawing input screen 3, and writing becomes easy.

  A specific algorithm example is given. First, the size of the virtual drawing space for drawing the drawing information data (Point_base.x, Point_base.y) input by the input device 4, which is composed of two-dimensional coordinates on the virtual drawing space, is set to BaseAeaSize.x, BaseAeaSize. .y, and the size of the entire drawing information display screen 6 is WholeWndSize.x and WholeWndSize.y.

  Then, the full-screen information display processing unit 21 uses the following formula to calculate the coordinate values (Point_base.x, Point_base.y) of the drawing information input by the input device 4, which are configured with two-dimensional coordinate values in the virtual drawing space. According to (1) and (2), the coordinate values (Point_WholeWnd.x, Point_WholeWnd.y) of the all drawing information display screen 6 are converted and displayed on the all drawing information display screen 6. This conversion formula is as follows.

Point_WholeWnd.x = Point_base.x x (WholeWndSize.x / BaseAeaSize.x) ... Formula (1)
Point_WholeWnd.y = Point_base.y x (WholeWndSize.y / BaseAeaSize.y) ... Formula (2)
Further, since the drawing information cut out on the drawing input screen 3 is enlarged and displayed with respect to the drawing information displayed on the entire drawing information display screen 6, the size of the entire drawing information display screen 6 with respect to the virtual drawing space is displayed. The magnification (WholeWndSize.x / BaseAeaSize.x, WholeWndSize.y / BaseAeaSize.y) is 1 or less, and this magnification is the drawing for the area to be cut out as the window of the drawing input screen 3 in the two-dimensional coordinate plane on the virtual drawing space. The value is smaller than the magnification of the window of the input screen 3 (DrawWndSize.x / DrawAeaSize.x, DrawWndSize.y / DrawAeaSize.y).

FIG. 7 is a diagram showing an example of a display form in which a drawing input screen displayed by the drawing system according to the embodiment of the present invention and an entire drawing information display screen are overlaid.
As a display method, there is a method of displaying the drawing input screen side by side with the entire drawing information display screen. However, in order to use the screen space efficiently, the drawing input screen is displayed while the drawing input screen being drawn is started. The input screen may be superimposed on the entire drawing information display screen as shown in FIG. 7, and the drawing input screen may be displayed in a translucent manner so that the participants can see the entire drawing information display screen behind.

  With such a display form, the participant can see both the drawn part and the whole at the same time even if the screen itself is narrow. Furthermore, by adding an image composed of four lines such as a frame to the entire drawing information display screen so that the participants can understand where the drawing input screen is the drawing screen of the entire drawing information display screen. A drawing area may be indicated.

  Thereafter, multiple drawing systems are connected via a network, drawing information is sent between clients in the system, and other people's drawing information is written to their own clients, so that multiple people can make one virtual two-dimensional A system that stores drawing information in a flat drawing space will be described as an example, and the entire drawing information display screen 6 will be displayed together with a drawing input screen.

  The drawing information extraction unit 13 enters the drawing input state for all drawing information on the virtual two-dimensional plane drawing space input by the input device 4 or stored in the drawing information storage unit 17. Accordingly, it has a function of extracting a lump or region of drawing information drawn at a certain time in the present or past.

  Since the drawing information is input from the drawing input screen 3 of each drawing processing apparatus 1, the drawing information extracting unit 13 can perform all of the drawing on the virtual two-dimensional plane as described above. For the drawing information, the area calculation for extracting the block or area of the drawing information is not always performed, but the drawing information of the range of the drawing input screen 3 opened at that time or the predetermined range including this information You may perform area | region calculation for extracting the lump and area | region with respect to drawing information.

As described above, in order to extract a block that is currently being drawn by the drawing information extraction unit 13 at a certain point in time or in the past, an extraction timing and a block selection method for extracting a block of meaningful drawing information will be described.
As a drawing state that is a timing to cut out drawing, a certain writer writes a certain amount or a certain amount of time to a certain area on a drawing space of a virtual two-dimensional plane or a region in the drawing input screen 3. When it is performed, the written drawing information is extracted.

Or, even when the drawing amount has not reached a certain amount, when multiple people write out drawing within a certain distance range, or when the time when drawing has not been done for a certain period of time after drawing has occurred Also good.
Alternatively, the timing at which the spread of the drawing coordinates is within a certain range with respect to the drawing coordinates at which drawing has started from a certain point in time may be used as the timing for cutting out.
The spread of the calculation target may be a distance from the drawing start point or a distance from the center point of the extraction area that is sequentially calculated for the drawing area.

In addition, the above-described extraction timing may be a timing for extracting a previously written area when writing is started in an area separated by a certain distance from a drawing line or point started from a certain point in time. .
Further, the timing described above may simply be a timing at which drawing information extraction is executed at regular intervals. Moreover, it is good also as a timing which cuts out the timing led by combining the method described so far.

The drawing information lump or area extraction procedure covers the drawing of a certain drawer up to the extraction time for the corresponding area activated by the drawing information extraction unit 13 with the current or past time as the extraction timing. There is a method of extracting the drawing of the area to be performed.
Further, there is a method of extracting a drawing of a region in which drawing information is covered from a certain past time point to the present or another certain time point as an extraction timing by the drawing information extraction unit 13.
In addition, there is a method in which the drawing information extraction unit 13 extracts a drawing within a certain range with reference to drawing information at the time of extraction with a current or past time as an extraction timing.

  In this case, the region may be cut out assuming that the reference point is the center of the extraction region, and the drawing point or line time stamp of the drawing point or line in the region up to the current or past time point The drawing information extraction unit 13 may extract a region including a reference drawn within a certain period until the reference information is included.

FIG. 8 is a diagram showing an example of drawing information extraction by the drawing processing device of the drawing system according to the embodiment of the present invention.
In addition, like the first block of extraction drawing shown in FIG. 8, the connected line or point is one block with respect to the drawing line or point at the extraction time with the current or past time as the extraction timing. As shown in FIG. 8, the lines or points are not connected, but the connected lines or points are within a certain distance. In some cases, the same lump may be used.

In addition, there is a method in which a participant writes a drawing block at a time when writing, and extracts a drawing area by the drawing information extraction unit 13 reflecting a tendency to take a breath before drawing another drawing.
This method starts from the area where there is a margin within a certain range on the drawing input screen, or the position of the first drawing after no writing for a certain period, and the line drawn within a certain time from that starting point. Even if the time from the end of drawing to the restart is more than a certain time, drawing lines and points that overlap or are inside are the same This is a method of capturing a lump as a lump.

  For example, the third block of the extracted drawing shown in FIG. 8 starts drawing from the starting point at the upper left, and draws a line of a connected or constant distance, or draws the next line within a certain time from the line drawing. Draw and expand the drawing area. Next, after a while, drawing is started from the start point of the fourth block shown in FIG.

At this time, if the time is not set for a while, the same drawing block is obtained. However, the fourth block start point is set to the drawing point in the third block before the start point, or the first block. Since the three blocks are separated from the lines and points of each drawing, they are defined as separate blocks.
In calculating the degree of separation from the third chunk by the drawing information extraction unit 13, the distance between the coordinates of each drawing line or point of the third chunk and the coordinates of the start point of the fourth chunk is calculated. There is a method, but when expanding the area of the third chunk, the coordinates of the area as shown by a rectangular broken line so that the drawing of the third chunk is covered as the drawing range of the third chunk is drawn information There is also a method in which the extraction unit 13 sequentially calculates and calculates the distance from the region to the start point of the fourth block.

  By proceeding with the drawing of the fourth chunk, the lower left drawing of the fourth chunk is close to the drawing point of the third chunk, but the drawing timing differs between the third chunk and the fourth chunk. Since the start points are different, the drawing information extraction unit 13 can extract the third chunk and the fourth chunk as separate chunks.

However, the definition of capturing as a lump is relaxed, and even if there is no overlap, drawing at a certain close distance may be a lump. Or you may make it take out a lump combining the method described so far.
Further, as a method of extracting a drawing block, only drawing information defined as a block may be extracted, or drawing in an area covering the drawing defined as the block may be extracted.
Therefore, although the drawing is not defined in the chunk, the drawing information extraction unit 13 may extract a drawing drawn within the range, for example, a past drawing or another drawing. The shape of the region may be a square or a circle.

The drawing data storage data of the extracted chunk is composed of a list of drawing information defined as the chunk when only the drawing information defined as the chunk is extracted from the chunk cut by the above method. .
In addition, when extracting a region within a certain range that covers or partially includes the lump cut out by the above method, a reference point P (x, y such as the center or upper left of the region is extracted. ) And area sizes Wx and Wy are stored data.

That is, the nth block G (n) is represented by the following equation (3).
G (n) = (P (x, y), Wx, Wy)) Equation (3)
When the extraction region is a circle or a square, G (n) is expressed by the following equation (4).
G (n) = (P (x, y), W)) (4)
W in Formula (10) is the distance from the reference point. If W is constant, such as the size of the drawing input screen, the extraction area is a constant and known, so G (n) is expressed by the following formula (5) or formula (6). The
G (n) = (P (x, y), 1) (5)
G (n) = P (x, y) (6)
At the time of drawing by the extracted drawing information display control unit 14, drawing is performed by extracting a list of drawing lines and points included in the range of G (n) from the list of drawing information stored in the storage device 12. .

  Actually, since the drawing information is stored in the storage device 12 in the two-dimensional coordinates on the drawing space of the virtual two-dimensional plane, when a group number that is a lump is added to the stored drawing information, Information that is associated with a list may be added to facilitate extraction.

If the timing for determining the drawing information to be actually displayed on the extracted drawing information display screen 5 is different for the chunk even if the timing for determining the drawing chunk does not change, the extracted drawing information display screen 5 The displayed image will be different.
For example, as a first method, a block to be extracted for display on the extracted drawing information display screen 5 is selected, and an area to cover the chunk is determined, while an image displayed on the extracted drawing information display screen 5 is The drawing information in the area covering the block may be calculated only once, or as the second method, the drawing information in the area may be sequentially calculated at each redrawing timing.

  Therefore, in the first method described above, the image displayed on the extracted drawing information display screen 5 looks like a static picture, but in the second method described above, the image displayed on the extracted drawing information display screen 5 is Depending on the speed of redrawing, it looks like a moving image, and the latest drawing contents in the area covering the above-mentioned selected lump are sequentially displayed.

  The extracted drawing information display control unit 14 displays an image showing the drawing information extracted by the drawing information extraction unit 13 on the extracted drawing information display screen 5 of the drawing display device 2 of each participant, and the displayed image is displayed. When the input device 4 is clicked, for example, when a mouse click is performed, the drawing information corresponding to the selected image is displayed on the drawing input screen 3.

FIG. 9 is a diagram showing a first example of the extracted drawing information display screen by the drawing processing device of the drawing system according to the embodiment of the present invention.
The example shown in FIG. 9 is an example in which the drawing information extracted by the drawing information extraction unit is displayed on the extracted drawing information display screen.
Images on the extracted drawing information display screen 5 are displayed in order from the left in a window in a predetermined area such as the upper part of the drawing input screen as shown in FIG.

  When the image on the extracted drawing information display screen 5 becomes full, the extracted drawing information display control unit 14 erases old drawing information on the screen, and the previous drawing information moves to the left side of the extracted drawing information display screen 5. Then, new drawing information is added and displayed on the right side, which is an area vacated as a result of this movement.

There is also a method of simply deleting old drawing information from the extracted drawing information display screen 5 and displaying new drawing information on the spot. The place of the extracted drawing information display screen 5 may be around the drawing input screen.
The extracted drawing information display screen 5 may be displayed in a form that flows around the outside of the drawing input screen or around the inside of the display.

FIG. 10 is a diagram illustrating a second example of the extracted drawing information display screen by the drawing processing device of the drawing system according to the embodiment of the present invention.
As described above, the display location of the extracted drawing information is determined, but it is not displayed in one window as shown in FIG. 9, but each individual window, for example, as shown in FIG. There is also a way to draw in a picture that looks like a TV screen.
The size of the extracted drawing information display screen 5 may be constant, or may be changed according to the size of the area to be cut out, that is, extracted.

On the other hand, the size of the chunk, which is the drawing information extracted by the drawing information extracting unit 13 displayed on the extracted drawing information display screen 5, may be constant as described above, or depending on the cut pieces. It may be different.
Therefore, when the size of the lump which is the drawing information extracted by the drawing information extracting unit 13 is constant, the drawing indicating the drawing information extracted by the drawing information extracting unit 13 is extracted and drawn without destroying the aspect ratio. The extracted area is displayed on the extracted drawing information display screen 5 as an image obtained by multiplying the corresponding area of the information display screen 5 by a ratio that is displayed in full.

  When the size of the chunk that is the drawing information extracted by the drawing information extraction unit 13 differs depending on the cut chunk, as a first display method, an area that is cut up from the virtual two-dimensional plane drawing space, The ratio with the area displayed on the extracted drawing information display screen 5 is constant.

In this case, the extracted drawing information display screen 5 is multiplied by a certain ratio while the center of the image indicating the drawing information extracted by the drawing information extraction unit 13 is the center of the corresponding area of the extracted drawing information display screen 5. Display an image.
Further, as a second display method, the ratio of the region cut from the virtual two-dimensional plane drawing space and the region displayed on the extracted drawing information display screen 5 is varied depending on the size of the region. For example, it may be displayed as an image multiplied by a ratio that can be displayed in full in the corresponding area of the extracted drawing information display screen 5 without changing the aspect ratio.

FIG. 11 is a diagram showing a drawing information selection example on the extracted drawing information display screen by the drawing processing device of the drawing system according to the embodiment of the present invention.
FIG. 12 is a diagram illustrating a display example of the selected image on the extracted drawing information display screen by the drawing processing device of the drawing system according to the embodiment of the present invention.
Further, as shown in FIG. 11, when the image displayed on the extracted drawing information display screen 5 is clicked with the mouse as the input device 4, the clicked image is displayed on the drawing input screen 3 as shown in FIG. Will be displayed.

  This is because a certain area on a virtual two-dimensional plane drawing space has been drawn up to now, but when the image displayed on the extracted drawing information display screen 5 is clicked with the mouse, it is displayed on the drawing input screen 3. This means that the drawn content area moves to another area on the virtual two-dimensional drawing space.

  If the image on the drawing input screen 3 is changed according to the click on the extracted drawing information display screen 5 with the mouse as described above, the original area that has been drawn on the drawing input screen 3 until now is drawn for a while. Therefore, the drawing information of the area may be extracted as one lump when a predetermined period during which the drawing is not performed is free, and the image on the drawing input screen 3 may be extracted by the mouse as described above. When the drawing information display screen 5 is changed according to the click, the drawing information extraction unit 13 extracts the drawing lump as a lump of drawing, and the extraction is performed as illustrated in the right end portion of the extracted drawing information display screen 5 illustrated in FIG. Drawing information may be displayed.

Next, the operation of the drawing system having the drawing processing apparatus 1 having the configuration shown in FIG. 9 will be described. FIG. 13 is a flowchart illustrating an example of a processing operation performed by the drawing system according to the embodiment of the present invention.
In the description of this process, the meanings of various variables are as follows.

(Point.x, Point.y): Coordinate value of drawing information on the drawing input screen
(Point_base.x, Point_base.y): Coordinate value of drawing information in the virtual drawing space
(DrawAeaPos.x, DrawAeaPos.y)… Upper left coordinate value of the cutout area for the 2D coordinate plane in the virtual drawing space
DrawAeaSize.x, DrawAeaSize.y… Size to cut downward from the upper left coordinate value and right size from the upper left coordinate value of the cutout area for the two-dimensional coordinate plane in the virtual drawing space
DrawWndSize.x, DrawWndSize.y… Size of the drawing input screen As described above, the coordinate value of the drawing information input on the drawing input screen 3 is (Point.x, Point.y), and the virtual drawing space Let the coordinate values of the drawing information composed of the above two-dimensional coordinates be (Point_base.x, Point_base.y).

  When a window of the drawing input screen is opened on the drawing input screen 3 by an operation on the drawing input screen 3 by the input device 4 (step S1), the display control unit 15 applies the two-dimensional coordinate plane on the virtual drawing space. Then, a cutout area is set as a window of the drawing input screen.

  Here, the upper left coordinate value of the cutout area is set to (DrawAeaPos.x, DrawAeaPos.y), and the size of cutting out from the upper left coordinate value and the size of cutting out from the upper left coordinate value are respectively DrawAeaSize.x And DrawAeaSize.y. In addition, the size of the drawing input screen window is set to DrawWndSize.x and DrawWndSize.y.

Note that DrawAeaSize.x, DrawAeaSize.y, DrawWndSize.x, and DrawWndSize.y are positive values. These values may be determined in advance, or may be set by sequentially inputting with the input device 4.
Based on the two-dimensional coordinates on the virtual drawing space, which are the coordinate values of the existing drawing information stored in the drawing information storage unit 17, the display control unit 15 stores the existing information in the cutout area on the drawing input screen 3. If there is drawing information (YES in step S2), the coordinate values (Point_base.x, Point_base.y) of the already drawn drawing information composed of the two-dimensional coordinate values in the virtual drawing space are displayed in the drawing input screen. The upper coordinate values (Point.x, Point.y) are converted, and the existing drawing information is displayed on the drawing input screen 3 of the drawing display device 2 in accordance with the converted coordinate values (step S3).

  Specifically, the display control unit 15 has coordinates that satisfy the following expressions (7) and (8) for drawing information that is two-dimensional coordinates on the virtual drawing space stored in the drawing information storage unit 17. When the value (Point_base.x, Point_base.y) exists, the coordinate value is converted into the coordinate value (Point.x, Point.y) on the drawing input screen 3 according to the following formulas (9) and (10). The image is converted and drawn on the drawing input screen 3.

DrawAeaPos.x ≦ Point_base.x ≦ DrawAeaPos.x + DrawAeaSize.x (7)
DrawAeaPos.y ≤ Point_base.y ≤ DrawAeaPos.y + DrawAeaSize.y (8)
Point.x = (Point_base.x-DrawAeaSize.x) × (DrawWndSize.x / DrawAeaSize.x) (9)
Point.y = (Point_base.y-DrawAeaSize.y) × (DrawWndSize.y / DrawAeaSize.y) Equation (10)
When the pen as the input device 4 is lowered by handwriting input by the input device 4 and a new drawing is performed on the drawing input screen 3, that is, when new drawing information is input from the drawing input screen 3 ( The display control unit 15 displays the drawing information in a window on the drawing input screen 3 and stores it in the drawing information storage unit 17 (step S5).

Specifically, the drawing information according to the drawing coordinate values (Point.x, Point.y) input on the drawing input screen 3 with the origin at the upper left of the window on the drawing input screen 3 is displayed on the drawing input screen 3. And the drawing coordinate values (Point.x, Point.y) are converted into two-dimensional coordinate values (Point_base.x, Point_base.y) on the virtual drawing space according to the following equations (11) and (12). The converted information is stored in the drawing information storage unit 17.
Point_base.x = Point.x × (DrawAeaSize.x / DrawWndSize.x) + DrawAeaSize.x Equation (11)
Point_base.y = Point.y x (DrawAeaSize.y / DrawWndSize.y) + DrawAeaSize.y (12)
The drawing information extraction unit 13 calculates whether or not the writing amount of each participant is greater than or equal to a certain amount with respect to the drawing on the virtual two-dimensional plane drawing space by each participant (step S6).
If the writing amount is greater than or equal to a certain amount (YES in step S6), the drawing information extraction unit 13 is the position and size of the block of drawing information currently being drawn, for example, the center within a predetermined range that covers the block. The size of the reference point and the area is calculated (step S7).

The extracted drawing information display control unit 14 displays, on the extracted drawing information display screen 5, a link image indicating a newly extracted lump or region of drawing information based on the calculation result by the drawing information extraction unit 13 ( Step S8).
After the process of step S8 or when it is determined “NO” in the process of step S6, the extracted drawing information display control unit 14 displays the link displayed by the process of step S8 or extracted and displayed in the past. It is checked whether or not the link drawing, which is an image, has been clicked with the mouse (step S9). If the link drawing has been clicked (YES in step S9), the drawing input screen 3 is opened (step S10) and the extracted drawing information display screen 5 is displayed. The drawing content of the corresponding drawing area is cut out from the drawing space on the virtual two-dimensional plane, and the coordinates of the cut-out area are converted into the coordinates to the drawing input screen 3 and drawn on the drawing input screen 3 (step S11).

If it is determined as “NO” after the process of step S11 or the process of step S9 and the drawing is not completed (NO in step S12), the process returns to the process of step S4, and if the drawing is completed. (YES in step S12), the processing operation is terminated.
FIG. 14 is a diagram illustrating another display example of the extracted drawing information by the drawing processing device of the drawing system according to the embodiment of the present invention.
Further, the extracted drawing information display control unit 14 is not limited to displaying the extracted image at a predetermined position on the drawing input screen as described above, but depending on the drawing state, for example, in the drawing input screen. After the margins and areas that have not been used for a long time are determined, as shown in FIG. 14, each of the extracted drawing information may be presented as a balloon 7 so as to overlap the determined areas. Good. That is, the extracted drawing information display control unit 14 may have a presentation position calculation function and a display function for extracted information.

FIG. 15 is a block diagram illustrating a third configuration example of the drawing processing apparatus of the drawing system according to the embodiment of the present invention.
In the example illustrated in FIG. 15, the drawing processing apparatus 1 further includes an extracted drawing information difference calculation unit 22 as compared with the example illustrated in FIG. 6. The extracted drawing information difference calculation unit 22 calculates a difference between the drawing information newly extracted by the drawing information extraction unit 13 and the drawing information extracted in the past by the drawing information extraction unit 13 and displayed on the drawing input screen 3. calculate.

Here, the drawing information extraction unit 13 calculates a reference point or a difference between the area and the previously extracted chunk area with respect to the newly extracted drawing information chunk, and the past difference is small. Extract drawing information chunks and areas.
The drawing information extraction unit 13 may determine that the difference is small when the distance between the reference points of the region is small as a criterion for determining whether or not the difference is small, or the difference when the overlapping area of the regions is large. You may judge that it is small.

The extracted storage data of the past drawing information block may be stored as it is in the storage device 12 as it is, or may be deleted. In this case, the past drawing block information is changed to new drawing block information.
Then, the extracted drawing information display control unit 14 deletes image information corresponding to a lump or region of past drawing information extracted by the drawing information extraction unit 13.
The processing of the drawing information extraction unit 13 and the extraction drawing information display control unit 14 may be performed by each participant's client having the input device 4, or the drawing information extraction unit 13 and the extraction drawing information display control unit are connected to the server 30. 14 may be provided and the server 30 may perform processing.

  In the former example, that is, when processing of the drawing information extraction unit 13 and the extraction drawing information display control unit 14 is performed by the client, the drawing information extraction unit 13 of each client uses the drawing data input by the input device 4 for the client, The drawing information is extracted by calculating the extraction timing for the drawing information on the drawing space of the virtual two-dimensional plane that holds the drawing data of all the clients sent from the server 30, and the drawing information is extracted. The display control unit 14 is a method for displaying the extraction result on the extracted drawing information display screen 5.

  In the latter example, that is, when the processing of the drawing information extraction unit 13 and the extracted drawing information display control unit 14 is performed by the server 30, the drawing information extraction unit 13 of the server 30 holds drawing data sent from all clients. The drawing information is extracted by calculating the extraction timing for the drawing information on the drawing space on the virtual two-dimensional plane, and the extracted drawing information display control unit 14 displays the extracted drawing information display screen on the screen 32. The extracted information is displayed in the part corresponding to 5, and the extracted drawing information block information is sent to each client.

  The client displays the extracted drawing information display screen 5 based on the lump information from the server 30. Furthermore, since the drawing information is input from the drawing input screen of each client, each client can draw drawing information in the range of the drawing input screen opened at that time or drawing information in a predetermined range including the drawing information. On the other hand, extraction timing is calculated and drawing information is extracted, and the extraction result is transmitted to the server 30.

  The server 30 stores chunk information, which is extracted drawing information from each client, in the internal storage device, and the extracted drawing information display control unit 14 displays the extracted information on the extracted drawing information display screen 5 on the screen 32. And the extracted drawing information block information is transmitted to each client other than the extraction source. The destination client displays the extracted drawing information display screen 5 based on the chunk information from the server 30.

Further, the server 30 may send the lump information, which is the extracted drawing information sent from each client, to the client as it is, or after performing addition processing and deletion processing on this information to each client. You may send it.
For example, the server 30 obtains a difference in the extraction area for the information of the extracted drawing information that has been sent from the previous information and each client at the same time and has not yet been transmitted to all clients, and the difference is small. If there is past chunk information, information is added that the relevant chunk information is in the past.

  If there is information on a chunk sent from each client with a small difference at the same time but not yet sent to all clients, the server 30 has arrived at the server 30 first and has received the same time from each client. The data itself that has not yet been sent to all clients is deleted and sent to the client.

Next, the operation of the drawing system having the drawing processing apparatus 1 having the configuration shown in FIG. 15 will be described. FIG. 16 is a flowchart showing a modification of the processing operation by the drawing system in the embodiment of the present invention.
In this process, the process from step S1 to S7 described above, that is, the process from the opening of the drawing input screen to the calculation of the position and size of the drawing information block currently being drawn by the drawing information extraction unit 13 is performed. Then, the extracted drawing information difference calculation unit 22 extracts the drawing information block newly extracted by the drawing information extraction unit 13 from the region and the past and is extracted by the drawing information extraction unit 13 and extracted drawing information display screen. The difference between the reference point and the area of the lump area displayed in 5 is calculated, and it is determined whether or not the degree of the difference between the two is greater than or equal to a certain level (step S21).

  If the degree of difference is equal to or greater than a certain level (YES in step S21), the extracted drawing information display control unit 14 regards both areas as the same area, and the corresponding information in the extracted drawing information display screen 5 is already displayed. The drawing information image is deleted (step S22). After the process of step S22 is completed, or when “NO” is determined in the process of step S21, the processes after step S8 described above are performed.

  As described above, in the drawing system according to the embodiment of the present invention, when drawing by a participant is performed, this drawing information is extracted and displayed on the extracted drawing information display screen. Therefore, the participant can easily notice the content that the other person is currently drawing during the drawing, so that the participant can easily make further drawing based on the drawing information of the other person. Therefore, the effect which produces the new idea in idea creation is produced.

  In the drawing system according to the embodiment of the present invention, the display target area is moved from the current area to the other person's drawing information area in order to draw in the other person's drawing information area. Further drawing by the participant can be facilitated based on the drawing information.

In the drawing system according to the embodiment of the present invention, the drawing information that is currently drawing by another person is displayed in a blank area in the drawing input screen. Therefore, there is an effect that does not hinder further drawing by the participant.
The present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be omitted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Drawing processing apparatus, 2 ... Drawing display apparatus, 3 ... Drawing input screen, 4 ... Input device, 5 ... Extraction drawing information display screen, 6 ... All drawing information display screen, 11 ... Control part, 12 ... Memory | storage device, 13 DESCRIPTION OF SYMBOLS ... Drawing information extraction part, 14 ... Extraction drawing information display control part, 15 ... Display control part, 16 ... Bus, 17 ... Drawing information storage part, 21 ... Full screen information display processing part, 22 ... Extraction drawing information difference calculation part, 30 ... Server, 31 ... Projector, 32 ... Screen.

Claims (10)

An input means for receiving drawing information input operations;
Drawing information storage means for storing the drawing information input by the input means together with information of a drawing target area in the drawing screen of the drawing information;
Display means having a drawing screen for drawing the drawing information input by the input means and the drawing information stored in the drawing information storage means;
Display control means for displaying the drawing information input by the input means and the drawing information stored in the drawing information storage means on the drawing screen based on the drawing target area information of the drawing information in the drawing screen;
Drawing information extracting means for extracting drawing information forming a predetermined unit according to the drawing state of the drawing information input by the input means or stored in the drawing information storage means;
A drawing apparatus comprising: extraction information display control means for displaying the drawing information extracted by the drawing information extraction means in distinction from the drawing information displayed on the drawing screen. The extraction information table control indicating means includes:
2. When the drawing information extracted by the drawing information extraction unit is displayed, when the displayed drawing information is selected, the selected information is displayed on the drawing screen. The drawing apparatus described in 1. The extraction information display control means includes
The drawing apparatus according to claim 1, wherein the drawing information extracted by the drawing information extraction unit is displayed in a blank area on the drawing screen or an area where display information does not change for a certain period of time. The extracted drawing information display means further includes calculation means for calculating a difference between the drawing information newly extracted by the drawing information extraction means and the drawing information extracted and displayed in the past by the drawing information extraction means. 4. The drawing apparatus according to claim 1, wherein drawing information satisfying a predetermined standard that can be regarded as information having the same degree is deleted from the drawing screen. 5. An input unit that accepts an input operation of drawing information, a drawing information storage unit that stores drawing information input by the input unit together with information of a drawing target area on the drawing screen of the drawing information, and drawing information input by the input unit And a drawing method used in a drawing apparatus comprising a display means having a drawing screen for drawing drawing information stored in the drawing information storage means,
The drawing device includes:
According to the drawing state of the drawing information input by the input means or stored in the drawing information storage means, drawing information forming a predetermined unit is extracted and the extracted drawing information is displayed on the drawing screen. A drawing method characterized in that the drawing information is displayed separately from the drawing information. The drawing device includes:
6. The drawing method according to claim 5, wherein when the extracted drawing information is displayed and the displayed drawing information is selected, the selected information is displayed on the drawing screen. . The drawing device includes:
6. The drawing method according to claim 5, wherein the extracted drawing information is displayed in a margin area on the drawing screen or an area where display information does not change for a certain period of time. The drawing device includes:
A calculation means for calculating a difference between the newly extracted drawing information and the drawing information extracted and displayed in the past;
The drawing method according to claim 5, wherein the drawing apparatus deletes drawing information satisfying a predetermined criterion that can be regarded as information having the same degree of difference from the drawing screen.   A program for causing a computer to execute the drawing method according to any one of claims 5 to 8.   A computer-readable recording medium on which the program according to claim 9 is recorded.

Images